Motorcyclist here. I tend to treat every other road user as if they're going to kill me at any moment.
I do this in the car as well as when I ride. A hell of a lot of motorcyclists develop a sixth-sense, making idiots far easier to spot....and read.
Sure I break the ruies on speeding when out away from built up areas, but if I put myself into a tree, it's my own fucking fault. I just can't stand the people that inconvenience and endanger everyone else, just because they're arseholes.
I've been paying a lot of attention to the types of car these arseholes drive. More often than not, they drive German cars, mostly BMW, VW, Audi and Mercedes. Not surprising really as they're aimed at the rude middle-classes. I see a lot of these cars come into the bodyshop I work in too. Generally they can't drive for shit and park using the 'when it bumps, I'm in the space' method. They also always want their door edges touched in from where they've opened them into other peoples vehicles in car parks.
I miss the days when it was only Volvos and Saabs we had to watch out for!